272 results found
Medical tests
… levels of both renin and aldosterone. If renin levels are low and aldosterone levels are high, a tumour may be present … especially when potassium levels in the blood are low. How To Prepare For 2 to 4 weeks before the test, you … For 3 days before a renin test, you may be asked to follow a special low-sodium diet. You may be asked to not eat …
Medical tests
… broken down into creatinine. Your kidneys take creatinine out of your blood and pass it out of your body in urine. If … BUN-to-creatinine ratio. Kidney disease or blocked urine flow from your kidney causes both BUN and creatinine levels … caused by a life-threatening infection, shock , cancer, or low blood flow to the kidneys. Dehydration . Muscle injury …
Medical tests
… tract . Sometimes a test for gastrin is done after eating a high-protein diet or after receiving an injection … test. Why It Is Done A gastrin test may be done to: Find out why a peptic ulcer keeps coming back. Check for certain … a large portion of the intestines (small bowel resection). Low levels Low gastrin levels may be caused by …
Medical tests
… also needed for energy, good muscle, and organ function. About 70% of the body's iron is bound to hemoglobin in red … pregnancy, during breastfeeding, or at times when there are low levels of iron in the body (such as after bleeding). The … capacity (TIBC), and transferrin saturation. High and low values The values for serum iron, total iron-binding …
Medical tests
… It helps keep the water (the amount of fluid inside and outside the body's cells) and electrolyte balance of the … for the body's needs. But if your potassium levels get low, it can take some time for your body to start holding on … is still passed in the urine, so you may end up with very low levels of potassium in your body, which can be …
Medical tests
… substances through the blood. When prealbumin levels are lower than normal, it may be a sign of a poor diet … test to be sure that a poor diet is the reason for your low prealbumin levels. Why It Is Done A prealbumin blood … to: Check for signs of a poor diet (malnutrition). Find out if you're getting enough nutrients, mainly protein, in …
Medical tests
… is working. How To Prepare If you are having a follow-up ALP test, you may be asked to not eat or drink for 10 … before the test. The ALP level generally goes up after eating, especially after you eat fatty foods. Tell your … have high ALP levels because the placenta makes ALP. Low values Low levels of ALP can be caused by: Conditions …
Medical tests
… is carefully controlled. When blood calcium levels get low ( hypocalcemia ), the bones release calcium to bring it … ), the extra calcium is stored in the bones or passed out of the body in urine and stool. The amount of calcium in … As blood calcium levels get high, phosphate levels get low, and the opposite is also true. It is important to get …
Medical tests
… the results of this test. Be sure to tell your doctor about all the non-prescription and prescription medicines you … Wrap an elastic band around your upper arm to stop the flow of blood. This makes the veins below the band larger so it is easier to put a needle into the …
Medical tests
… mainly in the liver. It helps keep the blood from leaking out of blood vessels. Albumin also helps carry some … sarcoidosis . Kidney disease. Liver disease. Tuberculosis . Low values Low albumin levels may be caused by: A poor diet …
